CBSE Class 8 Maths Proportional Reasoning 2 (Class 8 NCERT New) Quiz 1

1. Viswanath mixed 6 cups of rice with 3 cups of urad dal to make idlis, while Puneet mixed 4 cups of rice with 2 cups of urad dal. If cooked in the same way, would their idlis taste the same?

A Yes, because the ratios 6:3 and 4:2 are proportional B No, because the ratio of rice to urad dal is different in the two mixtures C Yes, because both mixtures use more rice than urad dal, regardless of ratio D No, because Puneet used fewer total cups than Viswanath

2. On a map, the RF shown is . What does this indicate?

A 1 cm on the map represents 60,00,000 cm on the ground B 1 km on the map represents 60,00,000 cm on the ground C 60,00,000 cm on the map represents 1 cm on the ground D 1 cm on the ground represents 60,00,000 cm on the map

3. Convert cm to kilometres.

A 6 km B 60 km C 600 km D 0.6 km

4. Using the map with RF , what is the most reasonable straight-line geographical distance between Bengaluru and Chennai?

A About 60 km B About 150 km C About 300 km D About 900 km

5. Using the same map with RF , what is the most reasonable straight-line geographical distance between Mangaluru and Chennai?

A About 120 km B About 300 km C About 600 km D About 1,200 km

6. If you measure the same two cities on different maps that use different scales (ratios), what should be true about the geographical distance you compute from each map?

A It should be approximately the same after converting with each map’s scale B It will be exactly the same map length on every map C It will vary widely because different scales always give different real distances D It cannot be determined without knowing road distances

7. Puneet has only 2 red chillies but wants to make a spice mix that tastes the same as Viswanath’s mix, where the ratio of coriander seeds : red chillies : toor dal : fenugreek seeds is 8 : 4 : 2 : 1. How much of each ingredient should Puneet use?

A 8 spoons coriander, 4 red chillies, 2 spoons toor dal, 1 spoon fenugreek B 4 spoons coriander, 2 red chillies, 1 spoon toor dal, 0.5 spoon fenugreek C 2 spoons coriander, 1 red chilli, 0.5 spoon toor dal, 0.25 spoon fenugreek D 6 spoons coriander, 2 red chillies, 2 spoons toor dal, 1 spoon fenugreek

8. In Example 1, paint is to be mixed in the ratio Red : Blue : White :: 2 : 3 : 5. If Yasmin has 10 litres of white paint, how many litres of red and blue paint should be added to get the same shade of purple?

A Red 2 L and Blue 3 L B Red 4 L and Blue 6 L C Red 5 L and Blue 5 L D Red 6 L and Blue 9 L

9. What is the total volume of the purple paint prepared in Example 1 when white paint is 10 litres and the ratio is 2 : 3 : 5?

A 10 litres B 14 litres C 20 litres D 30 litres

10. In Example 3, concrete is mixed in the ratio cement : sand : gravel :: 1 : 1.5 : 3. If 110 units of concrete are needed, how many units of each component are required?

A Cement 10, Sand 15, Gravel 30 B Cement 20, Sand 30, Gravel 60 C Cement 22, Sand 33, Gravel 55 D Cement 30, Sand 45, Gravel 90